Author Max Brooks became an expert on disaster preparedness — from pandemics to nuclear war — through researching for his books, 'World War Z,' 'Germ Warfare' and the forthcoming 'Devolution.' He spoke with Terry Gross about how the federal government is designed to respond to crises like COVID-19 — and what is preventing the tasks forces from being deployed. He'll also explain why "panic is not preparation," and how to have good "fact-hygiene."